452 NATURAL SCIENCE. augusi-. 



greenish-grey mud in which the animals Hve. Other creatures, how- 

 ever, furnish just as conspicuous examples of mimetic resemblance, 

 witness a small crab, whose back resembles a bit of muddy area 

 covered by corals, while its huge white arm suggests a fragment of 

 an Isis-hke Gorgonian. 



The detailed reports upon the various groups of animals will be 

 written by different specialist'^, and the whole work when complete 

 will furnish a most welcome addition to our knowledge of the Pacific 

 Ocean. The " Challenger" gave a rough sketch of the conditions of 

 deep-sea life; such expeditions as that of the "Albatross" help to 

 fill in the details of the picture. 



W. E. HOYLE. 



